KR100556761B1 - Cooling fin manufacturing apparatus for fin and tube solid type heat exchanger and manufacturing method thereof and cooling fin structure for fin and tube solid type heat exchanger - Google Patents

Abstract

The present invention relates to a cooling fin manufacturing apparatus for a fin-tube integrated heat exchanger, a method for manufacturing the same, and a cooling fin structure of a fin-tube integrated heat exchanger manufactured by the same, and the present invention provides extrusion formation to a predetermined diameter to guide a refrigerant. A fin-tube integrated heat exchanger comprising a coolant tube to be formed and a louvering fin that is continuously louvered to a fin forming portion which is integrally formed on the outer circumferential surface of the coolant tube. A first fin processing portion for forming a cooling fin by bending 15 to 45 ° while continuously cutting or cutting the center portion of the fin formation portion continuously through the fin forming portion in a longitudinal direction, and a helical gear from the rear of the first fin processing portion. And a second fin processing portion which bends the cooling fin further by 85 ° to 90 ° while passing through the fin forming part in the longitudinal direction between the two gears. By, the helical gear control using, as the cooling fins to form a fin-forming portion to the second step, and to quickly create the cooling fins increase the louver angle without damage to the heat sink to reduce the flow resistance of the air.

Description

COOLING FIN MANUFACTURING APPARATUS FOR FIN AND TUBE SOLID TYPE HEAT EXCHANGER AND MANUFACTURING METHOD THEREOF AND COOLING FIN STRUCTURE FOR FIN AND TUBE SOLID TYPE HEAT EXCHANGER}

1 is a perspective view showing a pre-applied fin-tube integrated evaporator,

Figure 2 is a schematic view showing to explain the manufacturing process of the cooling fin in the pre-evaporator,

Figure 3 is a block diagram schematically showing the manufacturing process of the cooling fins in the pre-evaporator,

Figure 4 is a schematic view showing for explaining the cooling fin formation process in the fin-tube integrated evaporator of the present invention,

5 is a plan view and a sectional view showing a detail "A" of FIG.

6 is a plan view and a sectional view showing a detail "B" of Figure 4,

Figure 7 is a schematic block diagram showing the manufacturing process of the cooling fin in the present invention evaporator.

** Description of symbols for the main parts of the drawing **

1: refrigerant tube 1a: tube portion

1b: fin forming portion 2: cooling fin

10: 1st pin processing part 11, 12: upper side, lower side spur gear

11a, 12a: rotating shaft 20: second pin processing part

21,22: Upper and lower helical gears 21a, 22a: Rotating shaft

The present invention relates to a fin-tube integrated heat exchanger, in particular a cooling fin manufacturing apparatus and a manufacturing method of the fin-tube integrated heat exchanger that can be produced simply, fast and stable cooling fins and fin-tube integrated heat exchanger It relates to a cooling fin structure of.

In general, the heat exchanger is a comprehensive condenser and evaporator in a refrigeration cycle system consisting of a compressor, a condenser, an expansion valve, and an evaporator. It is to be used for cooling, heating, refrigerating or warming by using the heat of absorption or heat generated in this process.

Heat exchangers can be classified according to their shape. The most widely known heat exchangers include a so-called 'fin-tube' type in which a plurality of cooling fins are inserted into a refrigerant pipe. This is mainly used as an evaporator in home appliances such as refrigerators. The refrigerant circulates through the refrigerant pipe and performs heat exchange with the outside through the wall of the refrigerant pipe, but combines a plurality of thin cooling fins on the outer circumferential surface of the refrigerant pipe to closely contact with the air. The contact area is enlarged to maximize the heat exchange efficiency.

However, since the heat exchanger has to manufacture the cooling fins separately and post-assemble them in the refrigerant pipe, the manufacturing process is complicated and difficult, and thus the applicant has developed a 2003 'fin-tube integrated heat exchanger' by extruding the cooling fins integrally with the refrigerant pipe. He was elected on March 13, 1989 (Application No. 03: 158,158).

1 is a perspective view showing an example of a pre- filed fin-tube integrated evaporator.

The fin-tube integrated evaporator, which is pre- filed as shown in the figure, is connected to the inlet of the inlet to the outlet of the expansion valve and the outlet to the inlet of the compressor to connect the refrigerant to the compressor (1) and the refrigerant tube (1) It is composed of a cooling fin 12, which is formed through louvering after extrusion, and a refrigerant pipe support 3 for placing and supporting the refrigerant pipe 1 on both left and right sides of the refrigerant pipe 1.

The refrigerant pipe 1 is formed of a circular tube having a garden-shaped cross-sectional shape having a predetermined diameter, and is connected to the plurality of pipe parts 1a extruded in a double row, and is connected between the pipe parts 1a and a square plate together with the pipe parts 1a. Extruded into a cross-sectional shape and consists of a fin forming portion (1b) for continuously forming the cooling fin (2) in the longitudinal direction through a louvering process.

Both the outer circumferential surface and the inner circumferential surface of the pipe part 1a are formed in the shape of a smooth tube with a smooth surface.

In addition, the coolant pipe 1 forms a cooling fin 2, and then continuously bends the straight portion 1c crossing the air flow direction and the straight portion 1c to connect with the next straight portion 1c. It is formed in a zigzag shape so as to consist of the curved portion 1d.

The cooling fin 2 has a longitudinal direction of the refrigerant pipe 1 through louvering so that air can pass from the lower end of the refrigerant pipe 1 to the upper direction in the center of the fin formation part 1b of the refrigerant pipe 1. A plurality of bends about 70 to 75 ° are formed in succession.

The refrigerant pipe supporter 3 has a plurality of support bodies 3a formed in a rectangular shape when projecting from the side, and both refrigerant bodies for fixing the curved portion 1d of the refrigerant pipe 1 to both support bodies 3a are fixed. The pipe mounting hole 3b is penetrated in the vertical direction.

The manufacturing process of the cooling fins in the fin-tube integrated evaporator of the above-described pre-application is as follows.

That is, when the cooling fins 2 are cut and bent at a desired angle at one time, both ends of the cooling fins 2 may be torn. Therefore, in consideration of this, various steps may be performed on the upper and lower sides of the cooling fins 2 as shown in FIG. After the cooling fin manufacturing apparatus (4a, 4b, 4c, 4d) of the four stages in step 4 to increase the louver angle step by step to produce the cooling fin (2).

For example, as shown in FIGS. 2 and 3, the fin forming part 1b of the refrigerant pipe 1 passes between the first cooling fin manufacturing apparatus 4a engaged in the spur gear method, and the first step S1. In the incision to form a louver and then transferred to the second cooling fin manufacturing device (4b) to form a louver angle of about 15 ~ 30 ° in the second step (S2). Next, the cooling fins transferred to the third cooling fin manufacturing apparatus form a louver angle of about 40 to 60 ° in the third step (S3), and finally, transfer the cooling fins to the fourth cooling fin manufacturing apparatus 4d and then to the fourth. In step S4, a louver angle of about 70 to 75 ° was formed.

However, in the above-described fin-tube integrated evaporator as described above, since the manufacturing steps (S1-> S2-> S3-> S4) as described above are required, the time required for manufacturing the cooling fins 2 is excessive. There was a problem that the productivity is lowered.

In addition, even if the cooling fins 2 are manufactured through such a process, the maximum cooling angle is generally 75 in consideration of the tearing of the fin forming unit 1b by the fourth cooling fin manufacturing device 4d in the last step S4. There was also a problem of increasing the flow resistance of the air by limiting inside and outside.

The present invention has been made in view of the problems of the conventional fin-tube integrated heat exchanger as described above, while the fin can be produced in a short time, the fin-tube to increase the louver angle of the cooling fin to reduce the flow resistance of the air SUMMARY OF THE INVENTION An object of the present invention is to provide a cooling fin manufacturing apparatus of an integrated heat exchanger, a manufacturing method thereof, and a cooling fin structure of a fin-tube integrated heat exchanger manufactured by the same.

In order to achieve the object of the present invention, to include a refrigerant pipe to be extruded to a predetermined diameter to guide the refrigerant and a cooling fin to form a continuous louvering process to form fins integrally formed on the outer peripheral surface of the refrigerant pipe In the fin-tube integrated heat exchanger, the fins are arranged to be engaged in a spur gear type, and the pin forming portion is passed in the longitudinal direction between the two gears, and the cooling fin is bent by a predetermined louver angle while continuously cutting or cutting the center portion of the fin forming portion continuously. (Iii) a second fin that is formed so as to be engaged with the helical gear method at the rear of the first fin processing part and then bends the cooling fin further by a predetermined louver angle while passing the fin forming part longitudinally between the two gears. It provides a cooling fin manufacturing apparatus of a fin-tube integrated heat exchanger, characterized in that consisting of a fin processing unit.

In addition, by using the first fin processing part, the central part of the fin processing part of the refrigerant pipe is continuously cut along the length direction of the refrigerant pipe in the width direction of the refrigerant pipe and louvered in the range of 15 to 45 ° to form a cooling fin. In the first step, and the second fin to the cooling fin formed by using the second fin processing unit in the second step of completing the cooling fin by louvering in the range of 85 ~ 90 ° of the fin-tube integrated heat exchanger Cooling fin manufacturing method.

Further, the fin forming portion is integrally formed between the outer circumferential surfaces of both refrigerant pipes extruded to a predetermined diameter to guide the refrigerant, and the center portion of the fin forming portion is continuously cut and 7 to the width direction of the fin forming portion. It provides a cooling fin structure of the fin-tube integrated heat exchanger, characterized in that to form a cooling fin by inclining to 30 °.

Hereinafter, an apparatus for manufacturing a cooling fin of a fin-tube integrated heat exchanger according to the present invention, a method for manufacturing the same, and a cooling fin structure of a fin-tube integrated heat exchanger manufactured by the same according to an embodiment shown in the accompanying drawings in detail. Explain.

FIG. 4 is a schematic view illustrating a process of forming a cooling fin in the fin-tube integrated evaporator of the present invention, FIG. 5 is a plan view and a cross-sectional view of part "A" of FIG. 4, and FIG. 6 is a part "B" of FIG. 4. A plan view and a cross-sectional view shown in detail, Figure 7 is a schematic block diagram showing the manufacturing process of the cooling fins in the evaporator of the present invention.

As shown therein, the cooling fin manufacturing apparatus of the fin-tube integrated evaporator according to the present invention has a longitudinal direction at the central portion of the fin forming portion 1b which is integrally extruded together with the tube portion 1a of the refrigerant tube 1. The first fin processing unit 10 for manufacturing a plurality of cooling fins (2) along the second fin arranging to the rear of the first fin processing unit 10 to further bend the cooling fin (2) by an arbitrary angle Consists of study (20).

As shown in FIG. 4, the first fin processing part 10 is disposed on the upper and lower sides with respect to the transfer path of the refrigerant pipe 1 and cuts the central region of the fin forming part 1b passing therebetween. As in a), the upper spur gear 11 and the lower spur gear 12 are engaged with each other so as to bend by an angle of about 15 to 45 ° based on the plane of the pinned part 1b during front projection.

To this end, the upper spur gear 11 and the lower spur gear 12 have a direction in which each of the rotating shafts 11a and 12a intersects the transfer direction of the pin forming part 1b with the pin forming part 1b interposed therebetween. Positioned in parallel to be made to rotate together by a separate interlocking member (not shown).

It is preferable that the upper spur gear 11 and the lower spur gear 12 have the same orthodontic specifications, so that the upper half and the lower half of the cooling fin 2 have the same length, but in some cases, both spur gears 11 Orthodontic standards of (12) may be formed differently so that the upper half length and the lower half length of the cooling fin 2 may be formed differently.

Here, the cooling fins 2 passing through the first fin processing unit 10 are formed in parallel with the width direction of the fin forming unit 1b when the cooling fins 2 are planarly projected as shown in FIG. 5 (b). .

In addition, as described above, the first pin processing part 10 may be bent after the continuous continuous cutting of the pin forming part 1b in the width direction, but in some cases, the first pin processing part 10 may be set to allow only a simple cutting.

As shown in FIG. 6 (a), the second fin processing unit 20 projects the cooling fins 2 disposed on the upper and lower sides based on the transfer path of the refrigerant pipe 1 and passes therebetween as shown in FIG. The upper helical gear 21 and the lower helical gear 22 are formed to be bent by an angle of about 85 to 90 degrees with respect to the plane of the pin forming portion 1b.

To this end, both the upper helical gear 21 and the lower helical gear 22 are formed in a long cylindrical shape in the longitudinal direction of the refrigerant pipe 1, but the exit teeth of the outlet fin so that the cooling fins 2 can be drawn out smoothly. It is preferable that the diameter is smaller than the diameter of the inlet tooth.

In addition, the upper helical gear 21 and the lower helical gear 22 are parallel in the direction in which the respective rotation shafts 21a and 22a coincide with the conveying direction of the cooling fins 2 with the pin forming portion 1b interposed therebetween. To be rotated together by a separate interlocking member (not shown).

In addition, the upper helical gear 21 and the lower helical gear 22 are preferably formed in the same standard in accordance with the dental specifications of the upper spur gear 11 and the lower spur gear 12.

Here, the cooling fins 2 having passed through the second fin processing unit 20 are formed to be inclined at about 7 to 30 ° with respect to the width direction of the cooling fins 2 during planar projection as shown in FIG.

In the drawings, the same reference numerals are given to the same parts as in the prior art.

The manufacturing process of the cooling fin in the present invention fin-tube integrated evaporator as described above is as follows.

That is, as shown in FIGS. 4 and 7, first, the fin forming unit 1b of the refrigerant pipe 1 passes between the upper and lower spur gears 11 and 12 of the first fin processing unit 10 to form the fin forming unit ( The cooling fin 2 is cut in a predetermined shape in the center of 1b) and bent to about 15 to 45 ° during side projection as shown in FIG. 5 (a). (S1 in FIG. 7) 2) is formed to be substantially parallel to the width direction of the cooling fin during the projection as shown in Figure 5 (b).

Here, as the upper spur gear 11 and the lower spur gear 12 are engaged in a disc shape, the inlet and outlet portions of the upper spur gear 11 and the lower spur gear 12 are wider than the engaging portion based on the transfer path of the refrigerant pipe 2 so as to smoothly transfer the cooling fins. Can be.

Next, as shown in FIGS. 4 and 7, the cooling fins 2 which are primarily processed are passed between the upper and lower helical gears 21 and 22 of the second fin processing unit 20 to pass the cooling fins 2 to FIG. 6. As shown in (a), bend to about 85 to 90 ° during front projection. (S2 of FIG. 7) At this time, the cooling fins 2 are the fin-forming portions 1b during the plane projection as shown in FIG. Form inclined at about 7 ~ 30 ° based on the width direction of).

Here, the upper helical gear 21 and the lower helical gear 22 are formed in a cylindrical shape parallel to the longitudinal direction of the refrigerant pipe 1, but the cooling is performed by forming the diameter of the exit tooth smaller than the diameter of the inlet tooth. The coolant pipe 1 in which the fin 2 was formed can be taken out smoothly.

In this way, the cooling fins can be manufactured quickly, and the loop resistance can be increased without damaging the cooling fins, thereby reducing the flow resistance of the air.

Cooling fin manufacturing apparatus of the fin-tube integrated heat exchanger according to the present invention, the manufacturing method and the cooling fin structure of the fin-tube integrated heat exchanger produced by the same, by using a helical gear 2 As the step is formed, the cooling fins can be manufactured quickly and the louver angle can be increased without damaging the cooling fins, thereby reducing the flow resistance of air.

Claims (4)

In a fin-tube integrated heat exchanger comprising a coolant tube extruded to a predetermined diameter to guide a coolant, and a cooling fin continuously formed by louvering to a fin forming unit integrally formed on an outer circumferential surface of the coolant tube, The first fin is arranged to be engaged in a spur gear type and passes through the fin forming portion in the longitudinal direction between the two gears to bend or cut the center portion of the fin forming portion continuously and bend to a predetermined louver angle to temporarily form the cooling fin. Studying, A pin-tube, comprising: a second fin processing portion arranged to be engaged with the helical gear method at the rear of the first fin processing portion to bend the cooling fin further by a predetermined louver angle while passing the fin forming portion longitudinally between the two gears. Apparatus for manufacturing cooling fins of an integrated heat exchanger. Cooling fins are formed by louvering at a range of 15 to 45 ° while simultaneously cutting the central portion of the fin processing part of the refrigerant pipe along the longitudinal direction of the refrigerant pipe in the width direction of the refrigerant pipe by using the first fin processing part of claim 1. With the first step, Method of manufacturing a cooling fin of the fin-tube integrated heat exchanger, characterized in that performed by the second step to complete the cooling fin by louvering the cooling fin formed by using the second fin processing portion of claim 1 in the 85 ~ 90 ° range. . delete Finned parts are integrally formed between the outer circumferential surfaces of both coolant tubes extruded to a predetermined diameter to guide the coolant, and the center portion of the fin formed part is continuously cut and 7 to 30 ° with respect to the width direction of the fin formed part. Cooling fin structure of the fin-tube integrated heat exchanger, characterized in that to bend to an extent to form a cooling fin.

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